Home / 20,845.08-28,759.02-11,886.12

Finding the Fourth Proportional to 20,845.08, 28,759.02 and 11,886.12

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Solution

The fourth proportional to 20,845.08, 28,759.02 and 11,886.12 is: 16,398.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845.08 : 28,759.02 = 11,886.12 : x
  2. Step 2: Convert to fraction form
    20,845.08/28,759.02 = 11,886.12/x
  3. Step 3: Cross multiply
    20,845.08x = 28,759.02 × 11,886.12
  4. Step 4: Simplify right side
    20,845.08x = 341,833,162.80
  5. Step 5: Solve for x
    x = 341,833,162.80/20,845.08
  6. Step 6: Final answer
    x = 16,398.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.